Android實現長時間不用螢幕變暗
阿新 • • 發佈:2019-01-30
直接上程式碼,程式碼如下:
import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.view.MotionEvent; import android.view.WindowManager; public class BaseActivity extends Activity { /** * 最大的螢幕亮度 */ float maxLight; /** * 當前的亮度 */ float currentLight; /** * 用來控制螢幕亮度 */ Handler handler; /** * 延時時間 */ long DenyTime = 5 * 1000L; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); InitData(); } private void InitData() { handler = new Handler(Looper.getMainLooper()); maxLight = GetLightness(this); } /** * 設定亮度 * * @param context * @param light */ void SetLight(Activity context, int light) { currentLight = light; WindowManager.LayoutParams localLayoutParams = context.getWindow().getAttributes(); localLayoutParams.screenBrightness = (light / 255.0F); context.getWindow().setAttributes(localLayoutParams); } /** * 獲取亮度 * * @param context * @return */ float GetLightness(Activity context) { WindowManager.LayoutParams localLayoutParams = context.getWindow().getAttributes(); float light = localLayoutParams.screenBrightness; return light; } @Override protected void onPause() { super.onPause(); stopSleepTask(); } @Override protected void onResume() { super.onResume(); startSleepTask(); } @Override public boolean dispatchTouchEvent(MotionEvent ev) { if (currentLight == 1) { startSleepTask(); } return super.dispatchTouchEvent(ev); } /** * 開啟休眠任務 */ void startSleepTask() { SetLight(this, (int) maxLight); handler.removeCallbacks(sleepWindowTask); handler.postDelayed(sleepWindowTask, DenyTime); } /** * 結束休眠任務 */ void stopSleepTask() { handler.removeCallbacks(sleepWindowTask); } /** * 休眠任務 */ Runnable sleepWindowTask = new Runnable() { @Override public void run() { SetLight(BaseActivity.this, 1); } }; }